Podcast
Questions and Answers
The heart is the largest organ in the body.
The heart is the largest organ in the body.
False (B)
The heart contains two muscular sections (chambers).
The heart contains two muscular sections (chambers).
False (B)
The main function of the heart is to pump blood throughout the body.
The main function of the heart is to pump blood throughout the body.
True (A)
The endocrine system sends out electrical impulses to control heart rate.
The endocrine system sends out electrical impulses to control heart rate.
The nervous system controls the rhythm and speed of heart rate.
The nervous system controls the rhythm and speed of heart rate.
The heart's chambers briefly hold blood before moving it due to mechanical pumps inside the heart.
The heart's chambers briefly hold blood before moving it due to mechanical pumps inside the heart.
The Sinoatrial (SA) node sends signals that make your heart beat.
The Sinoatrial (SA) node sends signals that make your heart beat.
The Left bundle branch sends electric impulses to your right ventricle.
The Left bundle branch sends electric impulses to your right ventricle.
Your heart is located in the back of your chest.
Your heart is located in the back of your chest.
The Purkinje fibers make your heart atria contract and pump out blood.
The Purkinje fibers make your heart atria contract and pump out blood.
Your heart looks like an upside-down pyramid with sharp edges.
Your heart looks like an upside-down pyramid with sharp edges.
On average, an adult's heart weighs about 10 ounces.
On average, an adult's heart weighs about 10 ounces.
The thyroid gland can regulate the heart rate through hormones.
The thyroid gland can regulate the heart rate through hormones.
The heart walls consist of four layers: endocardium, myocardium, epicardium, and pericardium.
The heart walls consist of four layers: endocardium, myocardium, epicardium, and pericardium.
Blood vessels called capillaries carry oxygen-rich blood back to the heart.
Blood vessels called capillaries carry oxygen-rich blood back to the heart.
The left atrium pumps oxygen-poor blood to the left ventricle.
The left atrium pumps oxygen-poor blood to the left ventricle.
The tricuspid valve is located between the left atrium and left ventricle.
The tricuspid valve is located between the left atrium and left ventricle.
The pulmonary valve opens when blood flows from the left ventricle to the aorta.
The pulmonary valve opens when blood flows from the left ventricle to the aorta.
Coronary arteries supply blood to the heart itself.
Coronary arteries supply blood to the heart itself.
The electrical conduction system of the heart controls the rhythm and pace of heartbeat.
The electrical conduction system of the heart controls the rhythm and pace of heartbeat.
The superior vena cava carries oxygen-rich blood from the upper body to the right atrium.
The superior vena cava carries oxygen-rich blood from the upper body to the right atrium.
The inferior vena cava brings blood from the lower body to the left atrium.
The inferior vena cava brings blood from the lower body to the left atrium.
